Power take-off for ground pulverizers



April 14,1942. A. M. BEARD 2,279,652

POWER TAKE-OFF FOR GROUND rqLvnnxzsns Filed Nov. 25, 1940 {a 30 35 re W-Zv 52 36' Patented Apr.- 14, 1942 UNITED STATES PATIENT OFFICE POWER TAKE-OFF FOR GROUND PULVERIZERS I Ava M. Beard, Butler, Mo.

Application November 25,1940, Serial No. 367,129

1 Claim.

The invention relates to a power take-off drive for ground pulverlzers, particularly of the cylindrical type, and it consists in the constructions,

general use.

It-is a further object of the invention to provide means for lowering and elevating the pulverizing means with respect to the ground increasing or decreasing the pulverizing action, as

well as to afford transportation of the apparatus from place to place.

It is a still further object of the invention to provide a pulverizer of extreme simplicity in construction, yet sturdy and eflicient in operation.

Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawing, wherein Figure 1 is a top plan view of my pulverizer, connected to the power-take-ofi of. a tractor, partly in section.

Figure 2 is a side elevation thereof.

There is illustrated a pulverizer generally-indicated by the reference character I0, comprising a closed frame H consisting of a rear wall l2, parallel spaced end walls l3, and a front wall I4,

the latter diverging forwardly at an angleas clearly shown in Figure 1. Intermediate the front wall l4 a horizontal portion I4 is provided for a purpose presently to be explained.

A shaft I5 is revolubly supported in bearings lli'mounted in respective side frames I3, and medially of the shaft there is a housing H, the shaft being revoluble in suitable bearings of the housing.

Upon the shaft l5, positioned within the housing there is a ring gear I8, suitably keyed thereon for rotation with the shaft, as will be explained hereinafter.

The housing I! has a forwardly extended tubular extension l9, the free end of which is formed as an element of a universal generally indicated at 20 complemental to a universal coupling 20' bolted to the horizontal portion IA of the front,

frame element. A tubular shaft 2| having a flanged end is also bolted to the portion 14', bolts 22 being employed to secure the coupling 20' and shaft 2| in position upon the frame. The other 23 terminating in a coupling head 24 for attachment to the power-take-ofi of a tractor indicated formally at 25.

A drive-shaft 26 is housed within the shaft 2|, the fore end being suitably onnected with the power-take-ofi shaft (not shown), and is of a length to extend rearwardly through the extension [9 and into the housing II. The shaft 26 has fixed thereon a gear 21 in mesh with the ring gear l8.

Upon opposite sides of the housing I! and fixed to the shaft [5 there is a pulverizer unit 28. The units 28 are identical in construction and a description of one will suflice for an understanding of the construction.

The unit 28 in the present instance comprises a'pair of hubs 29 spaced apart, one adjacent the bearing I6 of the side frame and the other adjacent the housing [1. The hubs 29 are keyed to the shaft l5 for rotation therewith. A plurality of radial arms 30 are carried-by the hubs 29 and end of the shaft 2| is provided with a universal extended between the arms 30 of one hub to a hub 29', there are mounted cutter blades 3|. The blades 3| are preferably arranged diagonally with respect to the longitudinal axis of the shaft I5, so that a draw out will be imparted upon the earth when the machine is in operation. To reinforce the blades. 3| and afford greater rigidity, the ends of the blades may be provided with a rim 32 secured thereto in any suitable manner. Each unit comprises a pair of cutting units although the number may be increased if desired.

In order to afford support as well as traction for the pulverizer unit, a pair of wheels 33 are provided, each wheel being mounted upon a stud shaft 34 of a lever 35. A hearing 36 is mounted upon the rear wall [2 adjacent respective end walls [3 for mounting of a, rock'shaft 31. The shaft 31 extends beyond the bearings 36 for rigid securement of respective levers 35. Intermediate the length of the shaft 31 there is an upstanding arm 38, rigidly fixed to the shaft and to the free end thereof, there is connected a pull rod 39. The rod 39 is extended forwardly in the direction of the tractor and is connected to a hand lever 40. The hand lever 40 is cooperable with a pawl and ratchet 4| suitably mounted on the shaft 2 I.

By this arrangementof mounting of the wheels 33 it will be seen that the pulverizer unit I0 may be raised or lowered with respect to the ground or supporting surface and thereby vary the 0perative relation of the cutting blades.

In use, when the tractor is moved forwardly, a direct drive from the tractor will be imparted to the pulverizer units, effectively breaking down having a, back wall, parallel end walls and a for- I wardly diverging front wall having a flat portion medially of the front wall, a shaft revolubly mounted between the end walls, a pair of pul-' verizing units fixed to the shaft for rotation therewith, a pulverizing unit being mounted upon the sides of the medial portion of the shaft, a

housing on the shaft at the medial portion thereof, said housing having a tubular extension and terminating in a universal joint constructed for mounting upon the flat portion of the front wall, a ring gear on the shaft positioned within the housing, a drive shaft extended through the tubular extension and into the housing, a gear on the drive shaft in mesh with the ring gear, said drive shaft having means for connection with the power take-off of a tractor, said frame including a rock shaft on the back wall, link members rigid on the shaft, stub axles on each link, a wheel on each stub axle, and means connected with the rock shaft for raising and lowering said link 15 members and wheels.

AVA M. BEARD. 

